Blower for rotary mills.



M. F. WILLIAMS. BLOWER FOB. ROTARY MILLS. APPLICATION FILED FEB. 5, 1914.

1,193,533? Patentedl July 14,1914, 7

2 BEBBTS-SHBETL M. F. WILLIAMS. BLOWER FOR ROTARY MILLS. APPLICATIQ}.T HILED FEB. 5, 1914.

Wm WW mg 1F uE 4/ J a M x w ,v n

special design for the tly wheel MILTON F. WILLIAMS, OF ST. LOUIS; MISSOURI, ASSIGNOR TO \VILLIAMS EJ'L'IEN'I CHUSHER AND PULVERIZER COMPANY, OF ST. LOUIS, MISSOURI,

or mssoimr.

A COETBGBATIGN BLOWER FOR ROTARY MILLS.

Patented J dlfy' ital- Application filed February 5, 1914. Serial No. 816,774.

T #77 w/m/a it may concern 30 it known that l. MiixroN F. lViLLLnIs, a citizen of the l'nited States residing at the it of St. Louis, State of Missouri, have invented a certain new and useful improve ment in Blowers tor Rotary Mills, of which the tolltnving is a full, clear. and exact description. such as will enable others skilled in the art to which it appertains to make and use the same reference being had to the accompanying drawings, forming part of this specitication. in which- Figure l isv a top view of a rotary mill showingthe blower inscction. Fig. 2 is a side elevation ot a mill showing the blower in elevation. Fig. -3 is a perspective of the lly wheel fan.

My invention relates broadly to milling.

and specifically to a form of hlowerparticularly adapted for rotary mills and having the fan blades carried on the tiy wheel of the mill and altar] and tly wheel casing of and fan. The purpose otthe invention is to provide a very simple and strong form of hlower which is huiltonto the inill itself and constitutes a portion of mill structure.

A turther object of my invention is to provide a blower ot' a torn) particularly adapted to use with a rotary reducing mill and adapted to handle the product of the mill. V

Other and i'urther ohjects of my invention will he obvious or hereinafter pointed out.

in the operation oi rotary mills tor reducing light products such as feed, leather, or lllllUllH materials or for tinely reducing heavier materials such as coal, or cement clinker. the most ctlicieut way of handling product ol the mill is to draw it out from the discharge hopper of the mill by pneumatic suction and convey it pneumatically to the place of delivery. For this purpose a r tary tan is usually employed, and it is the purpose of my invention to provide a fan of this sort which is operated as a portion of the mill. the same being carried by the fly wheel on the mill shaft. In conjunction with this "tau. l employ -a casing of special form which 'isadaptcd to coverand protect the tly wheel and the fan. operating to prevent egress o'tair or material therclroin at any point other than the exit, or the admis sion ot air at any point other than the. intake. ll n this ci'iiiiieetion the special form parts to get out of order.

of easing protects the fly wheel and the bearings of the mill from the tine product, andinsures etlicient operation of the blower. lurthermore my construction not only decreases the original cost, butalso decreases the cost of maintenance. 7

As illustrated in the drawings, It represents the frame of the mill in which join"- naled the shaft 2 driven by the pulley land carrying the heaters 5 which operate within the grinding chamber 6. Q is carried the fly wheel tan 7, the construe-- tion of which will he evident irta n Fig. This tly wheel fan has the wheel portion. 8 which performs the usual functions of a y wheel, upon which are carried the tan l)l 1.. t. 9. The fan blades i are disposed on the of the wheel radially of the shaft and a trapezoidal. form having the sloping: 2.. edges 10. i

llzlounted on the casing l is the blower casing comprising the wheel casing ll, and the fan using The wheel casing 11 is circular, and encompasses the fly wheel portion 8 on its inner and peripl'ieral sides. The fan casinglQ is of spiral contour to provide a pa sageway for the material from the tan casing to the conduit. The wheel casing and tan asing are secured together by the rivets Llthrough the :tlan 15: 'l, he inlet:v conduit 16 leads from the hopper of the machine to 1:. communicating; with the latteraxia shaft and the tan. its is lllt' Fig/l the fan blades f.) are di..' there is completely open space i' ter of the tan into whicl'i. the in drawn.

The fan operates in the. usual fashion. of a centrifugal fan, throwing" the material which is drawn in axially out ccntrilii ally by the air pressure. The material con ducted hy the air blades out of the 1 i discharge casing); through the outlet 17 and conveyed to any desired place 0t disposal. The tan casing 19, as well as the wheel casing 11 is mounted on the frame of the machine, and forms a part of the machine.

- A fan of the construction shown. is particularly adapted for the use at very high speed, as it is very strong; and has no loose Being" carried by thetly wheel it. is directly driven by the machine "liai'tt and d es ot rcqi'iire sop; rate belting or traneniiss in mechanism: In

Upon the shaft I this fashion it 11025 only decreases the original cost, but also decreases the cost of main; tenenoe. .7 v

The casing virtu of its form and construction performs the dual function of pr0- tecting the flywheel and cooperating with the fan.

What I claim is:

1. In a device having" an operating device 10 opcratedbyl a shaft, the combination of e fly Wheel carried by 'icbe shaft, fan bledes mounted on the fly Wheel and a blower cesing-encompassing the fly Wheel. and the fan blades; said blower casing including a fly 15 Wheel casing encompassing ie'zbefiy Wheel and 3a fan casing secured to the fly Wheel casing" and cooperating with the fan blades, said 'fancasing being provided with an axial inlet opening and a tangential discharge openinm I v 2. In e device of the class described, the

I combination of a fly Wheel, fan blades disposed radially on one face of fly Wheel,

and a casing encompassing the fly Wheel and 

